/*!
 * Copyright (c) Ascensio System SIA 2021. All rights reserved
 *
 * http://www.onlyoffice.com
 *
 * Version: 6.4.2 (build:6)
 */

(function (DocsAPI, window, document, undefined) {
  /*

        # Full #

        config = {
            type: 'desktop or mobile or embedded',
            width: '100% by default',
            height: '100% by default',
            documentType: 'word' | 'cell' | 'slide',// deprecate 'text' | 'spreadsheet' | 'presentation',
            token: <string> encrypted signature
            document: {
                title: 'document title',
                url: 'document url'
                fileType: 'document file type',
                options: <advanced options>,
                key: 'key',
                vkey: 'vkey',
                info: {
                    owner: 'owner name',
                    folder: 'path to document',
                    uploaded: '<uploaded date>',
                    sharingSettings: [
                        {
                            user: 'user name',
                            permissions: '<permissions>',
                            isLink: false
                        },
                        ...
                    ],
                    favorite: '<file is favorite>' // true/false/undefined (undefined - don't show fav. button)
                },
                permissions: {
                    edit: <can edit>, // default = true
                    download: <can download>, // default = true
                    reader: <can view in readable mode>,
                    review: <can review>, // default = edit
                    print: <can print>, // default = true
                    comment: <can comment in view mode> // default = edit,
                    modifyFilter: <can add, remove and save filter in the spreadsheet> // default = true
                    modifyContentControl: <can modify content controls in documenteditor> // default = true
                    fillForms:  <can edit forms in view mode> // default = edit || review,
                    copy: <can copy data> // default = true,
                    editCommentAuthorOnly: <can edit your own comments only> // default = false
                    deleteCommentAuthorOnly: <can delete your own comments only> // default = false,
                    reviewGroups: ["Group1", ""] // current user can accept/reject review changes made by users from Group1 and users without a group. [] - use groups, but can't change any group's changes
                    commentGroups: { // {} - use groups, but can't view/edit/delete any group's comments
                         view: ["Group1", ""] // current user can view comments made by users from Group1 and users without a group.
                         edit: ["Group1", ""] // current user can edit comments made by users from Group1 and users without a group.
                         remove: ["Group1", ""] // current user can remove comments made by users from Group1 and users without a group.
                    }
                }
            },
            editorConfig: {
                actionLink: { // open file and scroll to data, used with onMakeActionLink or the onRequestSendNotify event
                    action: {
                        type: "bookmark", // or type="comment"
                        data: <bookmark name> // or comment id
                    }
                },
                mode: 'view or edit',
                lang: <language code>,
                location: <location>,
                canCoAuthoring: <can coauthoring documents>,
                canBackToFolder: <can return to folder> - deprecated. use "customization.goback" parameter,
                createUrl: 'create document url', 
                sharingSettingsUrl: 'document sharing settings url',
                fileChoiceUrl: 'source url', // for mail merge or image from storage
                callbackUrl: <url for connection between sdk and portal>,
                mergeFolderUrl: 'folder for saving merged file', // must be deprecated, use saveAsUrl instead
                saveAsUrl: 'folder for saving files'
                licenseUrl: <url for license>,
                customerId: <customer id>,
                region: <regional settings> // can be 'en-us' or lang code

                user: {
                    id: 'user id',
                    name: 'user name',
                    group: 'group name' // for customization.reviewPermissions parameter
                },
                recent: [
                    {
                        title: 'document title',
                        url: 'document url',
                        folder: 'path to document',
                    },
                    ...
                ],
                templates: [
                    {
                        title: 'template name', // name - is deprecated
                        image: 'template icon url',
                        url: 'http://...'
                    },
                    ...
                ],
                customization: {
                    logo: {
                        image: url,
                        imageEmbedded: url,
                        url: http://...
                    },
                    customer: {
                        name: 'SuperPuper',
                        address: 'New-York, 125f-25',
                        mail: 'support@gmail.com',
                        www: 'www.superpuper.com',
                        info: 'Some info',
                        logo: ''
                    },
                    about: true,
                    feedback: {
                        visible: false,
                        url: http://...
                    },
                    goback: {
                        url: 'http://...',
                        text: 'Go to London',
                        blank: true,
                        requestClose: false // if true - goback send onRequestClose event instead opening url
                    },
                    reviewPermissions: {
                        "Group1": ["Group2"], // users from Group1 can accept/reject review changes made by users from Group2
                        "Group2": ["Group1", "Group2"] // users from Group2 can accept/reject review changes made by users from Group1 and Group2
                        "Group3": [""] // users from Group3 can accept/reject review changes made by users without a group
                    },
                    anonymous: { // set name for anonymous user
                        request: bool (default: true), // enable set name
                        label: string (default: "Guest") // postfix for user name
                    },
                    review: {
                        hideReviewDisplay: false, // hide button Review mode
                        hoverMode: false // true - show review balloons on mouse move, not on click on text
                    },
                    chat: true,
                    comments: true,
                    zoom: 100,
                    compactToolbar: false,
                    leftMenu: true,
                    rightMenu: true,
                    hideRightMenu: false, // hide or show right panel on first loading
                    toolbar: true,
                    statusBar: true,
                    autosave: true,
                    forcesave: false,
                    commentAuthorOnly: false, // must be deprecated. use permissions.editCommentAuthorOnly and permissions.deleteCommentAuthorOnly instead
                    showReviewChanges: false,
                    help: true,
                    compactHeader: false,
                    toolbarNoTabs: false,
                    toolbarHideFileName: false,
                    reviewDisplay: 'original', // original for viewer, markup for editor
                    spellcheck: true,
                    compatibleFeatures: false,
                    unit: 'cm' // cm, pt, inch,
                    mentionShare : true // customize tooltip for mention,
                    macros: true // can run macros in document
                    plugins: true // can run plugins in document
                    macrosMode: 'warn' // warn about automatic macros, 'enable', 'disable', 'warn',
                    trackChanges: undefined // true/false - open editor with track changes mode on/off,
                    hideRulers: false // hide or show rulers on first loading (presentation or document editor)
                    hideNotes: false // hide or show notes panel on first loading (presentation editor)
                    uiTheme: 'theme-dark' // set interface theme: id or default-dark/default-light
                },
                 coEditing: {
                     mode: 'fast', // <coauthoring mode>, 'fast' or 'strict'. if 'fast' and 'customization.autosave'=false -> set 'customization.autosave'=true
                     change: true, // can change co-authoring mode
                 },
                plugins: {
                    autostart: ['asc.{FFE1F462-1EA2-4391-990D-4CC84940B754}'],
                    pluginsData: [
                        "helloworld/config.json",
                        "chess/config.json",
                        "speech/config.json",
                        "clipart/config.json",
                    ]
                },
                wopi: { // only for wopi
                    FileNameMaxLength: 250 // max filename length for rename, 250 by default
                }
            },
            events: {
                'onAppReady': <application ready callback>,
                'onDocumentStateChange': <document state changed callback>
                'onDocumentReady': <document ready callback>
                'onRequestEditRights': <request rights for switching from view to edit>,
                'onRequestHistory': <request version history>,// must call refreshHistory method
                'onRequestHistoryData': <request version data>,// must call setHistoryData method
                'onRequestRestore': <try to restore selected version>,
                'onRequestHistoryClose': <request closing history>,
                'onError': <error callback>,
                'onWarning': <warning callback>,
                'onInfo': <document open callback>,// send view or edit mode
                'onOutdatedVersion': <outdated version callback>,// send when  previous version is opened
                'onDownloadAs': <download as callback>,// send url of downloaded file as a response for downloadAs method
                'onRequestSaveAs': <try to save copy of the document>,
                'onCollaborativeChanges': <co-editing changes callback>,// send when other user co-edit document
                'onRequestRename': <try to rename document>,
                'onMetaChange': // send when meta information changed
                'onRequestClose': <request close editor>,
                'onMakeActionLink': <request link to document with bookmark, comment...>,// must call setActionLink method
                'onRequestUsers': <request users list for mentions>,// must call setUsers method
                'onRequestSendNotify': //send when user is mentioned in a comment,
                'onRequestInsertImage': <try to insert image>,// must call insertImage method
                'onRequestCompareFile': <request file to compare>,// must call setRevisedFile method
                'onRequestSharingSettings': <request sharing settings>,// must call setSharingSettings method
                'onRequestCreateNew': <try to create document>,
            }
        }

        # Embedded #

        config = {
            type: 'embedded',
            width: '100% by default',
            height: '100% by default',
            documentType: 'word' | 'cell' | 'slide',// deprecate 'text' | 'spreadsheet' | 'presentation',
            document: {
                title: 'document title',
                url: 'document url',
                fileType: 'document file type',
                key: 'key',
                vkey: 'vkey'
            },
            editorConfig: {
                licenseUrl: <url for license>,
                customerId: <customer id>,
                autostart: 'document',    // action for app's autostart. for presentations default value is 'player'
                embedded: {
                     embedUrl: 'url',
                     fullscreenUrl: 'url',
                     saveUrl: 'url',
                     shareUrl: 'url',
                     toolbarDocked: 'top or bottom'
                }
            },
            events: {
                'onAppReady': <application ready callback>,
                'onBack': <back to folder callback>,
                'onError': <error callback>,
                'onDocumentReady': <document ready callback>,
                'onWarning': <warning callback>
            }
        }
    */

  // TODO: allow several instances on one page simultaneously

  DocsAPI.DocEditor = function (placeholderId, config) {
    var _self = this,
      _config = config || {};

    extend(_config, DocsAPI.DocEditor.defaultConfig);
    _config.editorConfig.canUseHistory =
      _config.events && !!_config.events.onRequestHistory;
    _config.editorConfig.canHistoryClose =
      _config.events && !!_config.events.onRequestHistoryClose;
    _config.editorConfig.canHistoryRestore =
      _config.events && !!_config.events.onRequestRestore;
    _config.editorConfig.canSendEmailAddresses =
      _config.events && !!_config.events.onRequestEmailAddresses;
    _config.editorConfig.canRequestEditRights =
      _config.events && !!_config.events.onRequestEditRights;
    _config.editorConfig.canRequestClose =
      _config.events && !!_config.events.onRequestClose;
    _config.editorConfig.canRename =
      _config.events && !!_config.events.onRequestRename;
    _config.editorConfig.canMakeActionLink =
      _config.events && !!_config.events.onMakeActionLink;
    _config.editorConfig.canRequestUsers =
      _config.events && !!_config.events.onRequestUsers;
    _config.editorConfig.canRequestSendNotify =
      _config.events && !!_config.events.onRequestSendNotify;
    _config.editorConfig.mergeFolderUrl =
      _config.editorConfig.mergeFolderUrl || _config.editorConfig.saveAsUrl;
    _config.editorConfig.canRequestSaveAs =
      _config.events && !!_config.events.onRequestSaveAs;
    _config.editorConfig.canRequestInsertImage =
      _config.events && !!_config.events.onRequestInsertImage;
    _config.editorConfig.canRequestMailMergeRecipients =
      _config.events && !!_config.events.onRequestMailMergeRecipients;
    _config.editorConfig.canRequestCompareFile =
      _config.events && !!_config.events.onRequestCompareFile;
    _config.editorConfig.canRequestSharingSettings =
      _config.events && !!_config.events.onRequestSharingSettings;
    _config.editorConfig.canRequestCreateNew =
      _config.events && !!_config.events.onRequestCreateNew;
    _config.frameEditorId = placeholderId;
    _config.parentOrigin = window.location.origin;

    var onMouseUp = function (evt) {
      _processMouse(evt);
    };

    var _attachMouseEvents = function () {
      if (window.addEventListener) {
        window.addEventListener('mouseup', onMouseUp, false);
      } else if (window.attachEvent) {
        window.attachEvent('onmouseup', onMouseUp);
      }
    };

    var _detachMouseEvents = function () {
      if (window.removeEventListener) {
        window.removeEventListener('mouseup', onMouseUp, false);
      } else if (window.detachEvent) {
        window.detachEvent('onmouseup', onMouseUp);
      }
    };

    var _onAppReady = function () {
      if (_config.type === 'mobile') {
        document.body.onfocus = function (e) {
          setTimeout(function () {
            iframe.contentWindow.focus();

            _sendCommand({
              command: 'resetFocus',
              data: {}
            });
          }, 10);
        };
      }

      _attachMouseEvents();

      if (_config.editorConfig) {
        _init(_config.editorConfig);
      }

      if (_config.document) {
        _openDocument(_config.document);
      }
    };

    var _callLocalStorage = function (data) {
      if (data.cmd == 'get') {
        if (data.keys && data.keys.length) {
          var af = data.keys.split(','),
            re = af[0];
          for (i = 0; ++i < af.length; ) re += '|' + af[i];

          re = new RegExp(re);
          k = {};
          for (i in localStorage) if (re.test(i)) k[i] = localStorage[i];
        } else {
          k = localStorage;
        }

        _sendCommand({
          command: 'internalCommand',
          data: {
            type: 'localstorage',
            keys: k
          }
        });
      } else if (data.cmd == 'set') {
        var k = data.keys,
          i;
        for (i in k) {
          localStorage.setItem(i, k[i]);
        }
      }
    };

    var _onMessage = function (msg) {
      if (msg) {
        if (msg.type === 'onExternalPluginMessage') {
          _sendCommand(msg);
        } else if (msg.type === 'onExternalPluginMessageCallback') {
          postMessage(window.parent, msg);
        } else if (msg.frameEditorId == placeholderId) {
          var events = _config.events || {},
            handler = events[msg.event],
            res;

          if (msg.event === 'onRequestEditRights' && !handler) {
            _applyEditRights(false, "handler isn't defined");
          } else if (
            msg.event === 'onInternalMessage' &&
            msg.data &&
            msg.data.type == 'localstorage'
          ) {
            _callLocalStorage(msg.data.data);
          } else {
            if (msg.event === 'onAppReady') {
              _onAppReady();
            }

            if (handler && typeof handler == 'function') {
              res = handler.call(_self, { target: _self, data: msg.data });
            }
          }
        }
      }
    };

    var _checkConfigParams = function () {
      if (_config.document) {
        if (
          !_config.document.url ||
          ((typeof _config.document.fileType !== 'string' ||
            _config.document.fileType == '') &&
            (typeof _config.documentType !== 'string' ||
              _config.documentType == ''))
        ) {
          window.alert(
            'One or more required parameter for the config object is not set'
          );
          return false;
        }

        var appMap = {
            text: 'docx',
            'text-pdf': 'pdf',
            spreadsheet: 'xlsx',
            presentation: 'pptx',
            word: 'docx',
            cell: 'xlsx',
            slide: 'pptx'
          },
          app;

        if (
          _config.documentType == 'text' ||
          _config.documentType == 'spreadsheet' ||
          _config.documentType == 'presentation'
        )
          console.warn(
            'The "documentType" parameter for the config object must take one of the values word/cell/slide.'
          );

        if (
          typeof _config.documentType === 'string' &&
          _config.documentType != ''
        ) {
          app = appMap[_config.documentType.toLowerCase()];
          if (!app) {
            window.alert(
              'The "documentType" parameter for the config object is invalid. Please correct it.'
            );
            return false;
          } else if (
            typeof _config.document.fileType !== 'string' ||
            _config.document.fileType == ''
          ) {
            _config.document.fileType = app;
          }
        }

        if (
          typeof _config.document.fileType === 'string' &&
          _config.document.fileType != ''
        ) {
          _config.document.fileType = _config.document.fileType.toLowerCase();
          var type =
            /^(?:(xls|xlsx|ods|csv|xlst|xlsy|gsheet|xlsm|xlt|xltm|xltx|fods|ots)|(pps|ppsx|ppt|pptx|odp|pptt|ppty|gslides|pot|potm|potx|ppsm|pptm|fodp|otp)|(doc|docx|doct|odt|gdoc|txt|rtf|pdf|mht|htm|html|epub|djvu|xps|oxps|docm|dot|dotm|dotx|fodt|ott|fb2|xml))$/.exec(
              _config.document.fileType
            );
          if (!type) {
            window.alert(
              'The "document.fileType" parameter for the config object is invalid. Please correct it.'
            );
            return false;
          } else if (
            typeof _config.documentType !== 'string' ||
            _config.documentType == ''
          ) {
            if (typeof type[1] === 'string') _config.documentType = 'cell';
            else if (typeof type[2] === 'string')
              _config.documentType = 'slide';
            else if (typeof type[3] === 'string') _config.documentType = 'word';
          }
        }

        var type = /^(?:(pdf|djvu|xps|oxps))$/.exec(_config.document.fileType);
        if (type && typeof type[1] === 'string') {
          _config.editorConfig.canUseHistory = false;
        }

        if (!_config.document.title || _config.document.title == '')
          _config.document.title = 'Unnamed.' + _config.document.fileType;

        if (!_config.document.key) {
          _config.document.key = 'xxxxxxxxxxxxxxxxxxxx'.replace(
            /[x]/g,
            function (c) {
              var r = (Math.random() * 16) | 0;
              return r.toString(16);
            }
          );
        } else if (typeof _config.document.key !== 'string') {
          window.alert(
            'The "document.key" parameter for the config object must be string. Please correct it.'
          );
          return false;
        }

        if (
          _config.editorConfig.user &&
          _config.editorConfig.user.id &&
          typeof _config.editorConfig.user.id == 'number'
        ) {
          _config.editorConfig.user.id =
            _config.editorConfig.user.id.toString();
          console.warn(
            'The "id" parameter for the editorConfig.user object must be a string.'
          );
        }

        _config.document.token = _config.token;
      }

      return true;
    };

    (function () {
      var result = /[\?\&]placement=(\w+)&?/.exec(window.location.search);
      if (!!result && result.length) {
        if (result[1] == 'desktop') {
          _config.editorConfig.targetApp = result[1];
          // _config.editorConfig.canBackToFolder = false;
          if (!_config.editorConfig.customization)
            _config.editorConfig.customization = {};
          _config.editorConfig.customization.about = false;
          _config.editorConfig.customization.compactHeader = false;
        }
      }
    })();

    var target = document.getElementById(placeholderId),
      iframe;

    if (target && _checkConfigParams()) {
      iframe = createIframe(_config);
      if (iframe.src) {
        var pathArray = iframe.src.split('/');
        this.frameOrigin = pathArray[0] + '//' + pathArray[2];
      }
      target.parentNode && target.parentNode.replaceChild(iframe, target);
      var _msgDispatcher = new MessageDispatcher(_onMessage, this);
    }

    /*
         cmd = {
         command: 'commandName',
         data: <command specific data>
         }
         */

    var _destroyEditor = function (cmd) {
      var target = document.createElement('div');
      target.setAttribute('id', placeholderId);

      if (iframe) {
        _msgDispatcher && _msgDispatcher.unbindEvents();
        _detachMouseEvents();
        iframe.parentNode && iframe.parentNode.replaceChild(target, iframe);
      }
    };

    var _sendCommand = function (cmd) {
      if (iframe && iframe.contentWindow)
        postMessage(iframe.contentWindow, cmd);
    };

    var _init = function (editorConfig) {
      _sendCommand({
        command: 'init',
        data: {
          config: editorConfig
        }
      });
    };

    var _openDocument = function (doc) {
      _sendCommand({
        command: 'openDocument',
        data: {
          doc: doc
        }
      });
    };

    var _showMessage = function (title, msg) {
      msg = msg || title;
      _sendCommand({
        command: 'showMessage',
        data: {
          msg: msg
        }
      });
    };

    var _applyEditRights = function (allowed, message) {
      _sendCommand({
        command: 'applyEditRights',
        data: {
          allowed: allowed,
          message: message
        }
      });
    };

    var _processSaveResult = function (result, message) {
      _sendCommand({
        command: 'processSaveResult',
        data: {
          result: result,
          message: message
        }
      });
    };

    // TODO: remove processRightsChange, use denyEditingRights
    var _processRightsChange = function (enabled, message) {
      _sendCommand({
        command: 'processRightsChange',
        data: {
          enabled: enabled,
          message: message
        }
      });
    };

    var _denyEditingRights = function (message) {
      _sendCommand({
        command: 'processRightsChange',
        data: {
          enabled: false,
          message: message
        }
      });
    };

    var _refreshHistory = function (data, message) {
      _sendCommand({
        command: 'refreshHistory',
        data: {
          data: data,
          message: message
        }
      });
    };

    var _setHistoryData = function (data, message) {
      _sendCommand({
        command: 'setHistoryData',
        data: {
          data: data,
          message: message
        }
      });
    };

    var _setEmailAddresses = function (data) {
      _sendCommand({
        command: 'setEmailAddresses',
        data: {
          data: data
        }
      });
    };

    var _setActionLink = function (data) {
      _sendCommand({
        command: 'setActionLink',
        data: {
          url: data
        }
      });
    };

    var _processMailMerge = function (enabled, message) {
      _sendCommand({
        command: 'processMailMerge',
        data: {
          enabled: enabled,
          message: message
        }
      });
    };

    var _downloadAs = function (data) {
      _sendCommand({
        command: 'downloadAs',
        data: data
      });
    };

    var _setUsers = function (data) {
      _sendCommand({
        command: 'setUsers',
        data: data
      });
    };

    var _showSharingSettings = function (data) {
      _sendCommand({
        command: 'showSharingSettings',
        data: data
      });
    };

    var _setSharingSettings = function (data) {
      _sendCommand({
        command: 'setSharingSettings',
        data: data
      });
    };

    var _insertImage = function (data) {
      _sendCommand({
        command: 'insertImage',
        data: data
      });
    };

    var _setMailMergeRecipients = function (data) {
      _sendCommand({
        command: 'setMailMergeRecipients',
        data: data
      });
    };

    var _setRevisedFile = function (data) {
      _sendCommand({
        command: 'setRevisedFile',
        data: data
      });
    };

    var _setFavorite = function (data) {
      _sendCommand({
        command: 'setFavorite',
        data: data
      });
    };

    var _requestClose = function (data) {
      _sendCommand({
        command: 'requestClose',
        data: data
      });
    };

    var _processMouse = function (evt) {
      var r = iframe.getBoundingClientRect();
      var data = {
        type: evt.type,
        x: evt.x - r.left,
        y: evt.y - r.top,
        event: evt
      };

      _sendCommand({
        command: 'processMouse',
        data: data
      });
    };

    var _grabFocus = function (data) {
      setTimeout(function () {
        _sendCommand({
          command: 'grabFocus',
          data: data
        });
      }, 10);
    };

    var _blurFocus = function (data) {
      _sendCommand({
        command: 'blurFocus',
        data: data
      });
    };

    var _serviceCommand = function (command, data) {
      _sendCommand({
        command: 'internalCommand',
        data: {
          command: command,
          data: data
        }
      });
    };

    return {
      showMessage: _showMessage,
      processSaveResult: _processSaveResult,
      processRightsChange: _processRightsChange,
      denyEditingRights: _denyEditingRights,
      refreshHistory: _refreshHistory,
      setHistoryData: _setHistoryData,
      setEmailAddresses: _setEmailAddresses,
      setActionLink: _setActionLink,
      processMailMerge: _processMailMerge,
      downloadAs: _downloadAs,
      serviceCommand: _serviceCommand,
      attachMouseEvents: _attachMouseEvents,
      detachMouseEvents: _detachMouseEvents,
      destroyEditor: _destroyEditor,
      setUsers: _setUsers,
      showSharingSettings: _showSharingSettings,
      setSharingSettings: _setSharingSettings,
      insertImage: _insertImage,
      setMailMergeRecipients: _setMailMergeRecipients,
      setRevisedFile: _setRevisedFile,
      setFavorite: _setFavorite,
      requestClose: _requestClose,
      grabFocus: _grabFocus,
      blurFocus: _blurFocus
    };
  };

  DocsAPI.DocEditor.defaultConfig = {
    type: 'desktop',
    width: '100%',
    height: '100%',
    editorConfig: {
      lang: 'en',
      canCoAuthoring: true,
      customization: {
        about: true,
        feedback: false
      }
    }
  };

  DocsAPI.DocEditor.version = function () {
    return '6.4.2';
  };

  MessageDispatcher = function (fn, scope) {
    var _fn = fn,
      _scope = scope || window,
      eventFn = function (msg) {
        _onMessage(msg);
      };

    var _bindEvents = function () {
      if (window.addEventListener) {
        window.addEventListener('message', eventFn, false);
      } else if (window.attachEvent) {
        window.attachEvent('onmessage', eventFn);
      }
    };

    var _unbindEvents = function () {
      if (window.removeEventListener) {
        window.removeEventListener('message', eventFn, false);
      } else if (window.detachEvent) {
        window.detachEvent('onmessage', eventFn);
      }
    };

    var _onMessage = function (msg) {
      // TODO: check message origin
      if (msg && window.JSON && _scope.frameOrigin == msg.origin) {
        try {
          var msg = window.JSON.parse(msg.data);
          if (_fn) {
            _fn.call(_scope, msg);
          }
        } catch (e) {}
      }
    };

    _bindEvents.call(this);

    return {
      unbindEvents: _unbindEvents
    };
  };

  function getBasePath() {
    var scripts = document.getElementsByTagName('script'),
      match;

    for (var i = scripts.length - 1; i >= 0; i--) {
      match = scripts[i].src.match(/(.*)api\/documents\/api.js/i);
      if (match) {
        return match[1];
      }
    }

    return '';
  }

  function getExtensionPath() {
    if ('undefined' == typeof extensionParams || null == extensionParams['url'])
      return null;
    return extensionParams['url'] + 'apps/';
  }

  function getAppPath(config) {
    var extensionPath = getExtensionPath(),
      path = extensionPath ? extensionPath : getBasePath(),
      appMap = {
        text: 'documenteditor',
        'text-pdf': 'documenteditor',
        spreadsheet: 'spreadsheeteditor',
        presentation: 'presentationeditor',
        word: 'documenteditor',
        cell: 'spreadsheeteditor',
        slide: 'presentationeditor'
      },
      app = appMap['word'];

    if (typeof config.documentType === 'string') {
      app = appMap[config.documentType.toLowerCase()];
    } else if (
      !!config.document &&
      typeof config.document.fileType === 'string'
    ) {
      var type =
        /^(?:(xls|xlsx|ods|csv|xlst|xlsy|gsheet|xlsm|xlt|xltm|xltx|fods|ots)|(pps|ppsx|ppt|pptx|odp|pptt|ppty|gslides|pot|potm|potx|ppsm|pptm|fodp|otp))$/.exec(
          config.document.fileType
        );
      if (type) {
        if (typeof type[1] === 'string') app = appMap['cell'];
        else if (typeof type[2] === 'string') app = appMap['slide'];
      }
    }

    var userAgent = navigator.userAgent.toLowerCase(),
      check = function (regex) {
        return regex.test(userAgent);
      },
      isIE =
        !check(/opera/) && (check(/msie/) || check(/trident/) || check(/edge/)),
      isChrome = !isIE && check(/\bchrome\b/),
      isSafari_mobile =
        !isIE && !isChrome && check(/safari/) && navigator.maxTouchPoints > 0;

    path += app + '/';
    path +=
      config.type === 'mobile' || isSafari_mobile
        ? 'mobile'
        : config.type === 'embedded'
        ? 'embed'
        : 'main';

    var index = '/index.html';
    if (config.editorConfig) {
      var customization = config.editorConfig.customization;
      if (
        typeof customization == 'object' &&
        (customization.toolbarNoTabs ||
          (config.editorConfig.targetApp !== 'desktop' &&
            (customization.loaderName || customization.loaderLogo)))
      ) {
        index = '/index_loader.html';
      } else if (
        config.editorConfig.mode == 'editdiagram' ||
        config.editorConfig.mode == 'editmerge'
      )
        index = '/index_internal.html';
    }
    path += index;
    return path;
  }

  function getAppParameters(config) {
    var params = '?_dc=6.4.2-6';

    if (config.editorConfig && config.editorConfig.lang)
      params += '&lang=' + config.editorConfig.lang;

    if (config.editorConfig && config.editorConfig.targetApp !== 'desktop') {
      if (
        typeof config.editorConfig.customization == 'object' &&
        config.editorConfig.customization.loaderName
      ) {
        if (config.editorConfig.customization.loaderName !== 'none')
          params +=
            '&customer=' +
            encodeURIComponent(config.editorConfig.customization.loaderName);
      } else params += '&customer=ONLYOFFICE';
      if (
        typeof config.editorConfig.customization == 'object' &&
        config.editorConfig.customization.loaderLogo
      ) {
        if (config.editorConfig.customization.loaderLogo !== '')
          params +=
            '&logo=' +
            encodeURIComponent(config.editorConfig.customization.loaderLogo);
      } else if (
        typeof config.editorConfig.customization == 'object' &&
        config.editorConfig.customization.logo
      ) {
        if (
          config.type == 'embedded' &&
          config.editorConfig.customization.logo.imageEmbedded
        )
          params +=
            '&headerlogo=' +
            encodeURIComponent(
              config.editorConfig.customization.logo.imageEmbedded
            );
        else if (
          config.type != 'embedded' &&
          config.editorConfig.customization.logo.image
        )
          params +=
            '&headerlogo=' +
            encodeURIComponent(config.editorConfig.customization.logo.image);
      }
    }

    if (
      config.editorConfig &&
      (config.editorConfig.mode == 'editdiagram' ||
        config.editorConfig.mode == 'editmerge')
    )
      params += '&internal=true';

    if (config.frameEditorId)
      params += '&frameEditorId=' + config.frameEditorId;

    if (
      (config.editorConfig && config.editorConfig.mode == 'view') ||
      (config.document &&
        config.document.permissions &&
        config.document.permissions.edit === false &&
        !config.document.permissions.review)
    )
      params += '&mode=view';

    if (
      config.editorConfig &&
      config.editorConfig.customization &&
      !!config.editorConfig.customization.compactHeader
    )
      params += '&compact=true';

    if (
      config.editorConfig &&
      config.editorConfig.customization &&
      config.editorConfig.customization.toolbar === false
    )
      params += '&toolbar=false';
    else if (
      config.document &&
      config.document.permissions &&
      config.document.permissions.edit === false &&
      config.document.permissions.fillForms
    )
      params += '&toolbar=true';

    if (config.parentOrigin) params += '&parentOrigin=' + config.parentOrigin;

    if (
      config.editorConfig &&
      config.editorConfig.customization &&
      config.editorConfig.customization.uiTheme
    )
      params += '&uitheme=' + config.editorConfig.customization.uiTheme;

    return params;
  }

  function createIframe(config) {
    var iframe = document.createElement('iframe');

    iframe.src = getAppPath(config) + getAppParameters(config);
    iframe.width = config.width;
    iframe.height = config.height;
    iframe.align = 'top';
    iframe.frameBorder = 0;
    iframe.name = 'frameEditor';
    iframe.allowFullscreen = true;
    iframe.setAttribute('allowfullscreen', ''); // for IE11
    iframe.setAttribute('onmousewheel', ''); // for Safari on Mac
    iframe.setAttribute(
      'allow',
      'autoplay; camera; microphone; display-capture'
    );

    if (config.type == 'mobile') {
      iframe.style.position = 'fixed';
      iframe.style.overflow = 'hidden';
      document.body.style.overscrollBehaviorY = 'contain';
    }
    return iframe;
  }

  function postMessage(wnd, msg) {
    if (wnd && wnd.postMessage && window.JSON) {
      // TODO: specify explicit origin
      wnd.postMessage(window.JSON.stringify(msg), '*');
    }
  }

  function extend(dest, src) {
    for (var prop in src) {
      if (src.hasOwnProperty(prop)) {
        if (typeof dest[prop] === 'undefined') {
          dest[prop] = src[prop];
        } else if (
          typeof dest[prop] === 'object' &&
          typeof src[prop] === 'object'
        ) {
          extend(dest[prop], src[prop]);
        }
      }
    }
    return dest;
  }
})((window.DocsAPI = window.DocsAPI || {}), window, document);
